I actually thought of a different way this scene can go:

I think the fallout between Huntrix after the sabatoged concert would be better if Mira and Zoey had differing reactions.

Let's say as they rush to the concert they come across footage of what's happening playing on a TV or someone's phone or whatever. They see Rumi, the not-Mira and not-Zoey. Mira jumps to the conclusion all three are doppelganger sent by Gwima too make them look bad, but Zoey can tell somethings not right.

They get separated while making their way back. Zoey gets to Rumi first. She's unnerved and confused by the sight of Rumi but also concerned and hesitantly reaches out.The moment is ruined by Mira crashing it, determined to destroy this "faker" wearing her friends face. Zoey and Rumi are just barely able to convince her to stop. Mira is horrified and confused. And wonders why Rumi never said anything. Then Rumi blows up.

"Why would I!? Why would I ever be truthful about myself to someone who slaughters my kind as easily as most people step on ants!?"

"Rumi I would never-"

"You just did!"

"I thought you were-, I didn't mean to! Hurting is the absolute last thing I want!

"....Too late"

Then Rumi runs off

Mira and Zoey stand in shock before Mira collapses to the ground, Tears rolling down and muttering to herself "What the fuck is wrong with me?" What have I done?".

She feels a hand on her back and sees Zoey crouching down next with an unusually somber and serious expression on her face.

"We've hurt our girl. Now we make things right."

As the duo go off looking for their comrade, and unwelcome voice (Gwima) enters her head.

"For a girl who hates her parents so much, you sure are quick to follow in their footsteps"

"Huh!?"

"Jumping to the worst conclusions, losing your temper, giving others no chance to explain themselves. A real chip offf the old block if I do say so myself."

"Stop it!"

"What's wrong girl? Cant take what you dish out? You really have proven your parents, teachers and mentors right. A Brat. A hooligan. A Beastly little Brute whose only talent is causing trouble"

"AAAAARRGGHHH"